Ironman group

World Classic Duathlon Series: Chennai will make history in Indian endurance sports when it hosts the country’s first-ever IRONMAN 5i50 Triathlon, alongside the debut of the DuYoska Duathlon, on Sunday (January 11). With the Sports Development Authority of Tamil Nadu (SDAT) as the presenting sponsor, the event places India among a select group of nations to host the globally recognised IRONMAN 5i50 format.

With this launch, India becomes the third country in Asia and the sixth globally to host the IRONMAN Group’s Olympic-distance 5i50 Triathlon, which features a 1.5 km swim, 40 km cycling leg, and a 10 km run, covering a total distance of 51.5 km.

The inaugural edition has attracted 529 registered athletes, including 83 women competitors, 17 international participants, and over 150 athletes from Tamil Nadu, reflecting both strong domestic representation and growing international interest.